2021 ICD-10-CM Diagnosis Sections -

Malignant neoplasm of breast:

• C50.0 Malignant neoplasm of nipple and areola
• C50.1 Malignant neoplasm of central portion of breast
• C50.2 Malignant neoplasm of upper-inner quadrant of breast
• C50.3 Malignant neoplasm of lower-inner quadrant of breast
• C50.4 Malignant neoplasm of upper-outer quadrant of breast
• C50.5 Malignant neoplasm of lower-outer quadrant of breast
• C50.6 Malignant neoplasm of axillary tail of breast
• C50.8 Malignant neoplasm of overlapping sites of breast
• C50.9 Malignant neoplasm of breast of unspecified site